Covering for staved pipes



Patented June 2, 1931 UNITED STATES PATENT OFFICE DOZIER FINLEY, OFBERKELEY, CALIFORNIA, ASSIGNOR TO' THE- PARAFFINE COM- PANIFS, INC., OFSAN FRANCISCO, CALIFORNIA, A CORPORATION OF DELAWARE COVERING- FORSTAVED IIIIESy Application led August 10, 1927. ,Serial No. 212,008.

proximately flush with the surface of the p l(Other objects of theinvention together with the foregoing will be set forth in the followingdescription of the preferred embodiment of means for practicing myinvention and which is illustrated in the drawings accompanying andforming part of the specification. It is to be understood that I do notlimit myself to the showing made by the said description and drawings,as I may adopt variations of my preferred form Within the scope of myinvention as set forth in the claims.

Referring to the drawings:

Figure l is a longitudinal, cross sectional view of the pipe, pipecovering and binding.

Figure 2 is a sectional view showing a binding wire seated in a recessin the surface of the pipe.

Figure 3 is a plan view illustrating the manner in which the bindingmeans is fastened.

A pipe designed for underground worl.: is preferably covered by means ofan insulating covering in order to protect it. In many cases, stavedpipes are used and it is then nec* essary to apply a binding in order tohold them together. Upon application of the covering, it is apparentthat a smooth surface 1s difhcult to obtain, since the binding meanswhich rests on the surface of the pipe will project into the coveringand cause ridges therein.

In terms of broad inclusion my invention comprises the provision ofrecesses and/or grooves in the surface of a pipe, in order that bindingmeans, such as a binding wire and clamping anchor, can seat therein and11e approximately flush with the surface thereof;

so that a covering canfbe smoothly placed thereon. It isl preferred toprovide recesses deep enough to completely seat the binding means,rather than to 'have them project above the surface.' Y n j 55More'speciiically my invention comprises a wood staved pipe 2, thesurface of -whichis preferably provided with a continuous spiral grooveor recess 3. A binding wire 4 is wound around the pipe and is seatedwithin the groove, and the top thereof is approximately flush with orbelow the outer surfacevof the pipe, so that a `covering 6 can besmoothly Woundtherearound. Although in the preferred embodiment of myinvention, a spiral groove is provided, it is obvious that the spirit ofthe invention can be carried out with any other method of binding,provided that the means are seated in the outer1 surface of the pipe. Inorder to prevent the binding means, k which may be of metal, fromcorroding due to moisture which might accumulate in the Wood, it ispreferred to provide a layer 7 of insulating material such as asphalt,tar or bitumen between it and the pipe, as is shown in Figure 2.

In Figure 3 is shown the method of fastening. Near the end of the pipe awider recess 8 is provided, sol that it can accommodate several loops ofwire lying adjacent to 780 each other. This groove leads into a deeper'recess 9 in which is seated the anchor l1 having prongs l2 projectinginto the wood and prongs 13 bent over the loops to secure and fiX thestrand of wire. The end of the wire is bent back along the anchor and issecured in recess 9 by means of a staple 14.

From the above, it can be seen that if a. covering is applied over thepipe, there will be no projections on the surface thereof, to preventthe smooth application of the covering thereto.

I claim:

1. A pipe having a recess in the surface thereof and a second preformedrecess com- ,95 municating therewith, binding means seated in the firstrecess, and means seated in the second recess for clamping said bindingmeans.

2. A pipe having a groove extending 1Go around the surface thereof and apreformed recess communicating therewith, a binding wire seated in saidgroove, and means seated in said recess for clamping the wire.

3. A pipe having a continuous substantially helical `groove extending4around the surface thereof and a preformed recess communicatingtherewith, a binding wire seated in said groove, and means seated insaid recess for clamping the wire.

4. A pipe having a continuous substantially helical groove extendingaround the surface thereof, said groove forming an 'enlarged recessencircling the pipe adjacent the end thereof, a binding Wire seated insaid groove and coiled in a plurality of loops lying in said enlargedrecess, and means seated in said recess for clamping the loops.

f5. A pipe having a continuous substantially helical groove extendingaround the surface thereof, said groove for-ming an enlarged recessencircling the pipe adjacent the end Vthereof and said recessVcommunieating with a second recess in the pipe, a binding wire seatedin said groove and coiled Iin a plurality of loops lying 4in saidenlarged recess, and means seated in the second recess for clamping theloops.

In vtestimony whereof, I have hereunto set my hand.

DOZIER FINLEYf.

